5x5-25) a] The percentage composition of an organic compound found to

1.	5x5-25) a] The percentage composition of an organic compound found to contain39.9% carbon, 6.7% hydrogen and the rest is oxygen. If the molecular massof the compound is 60gmol"1. Determine the molecular formula of thecompound.4
Answer» We assume100 gof compound. Therefore the acid contains39.9 g C;6.7 g H and53.4 g O. Explanation: We divide the percentage composition by theatomicmass of each constituent element: 39.9 g/12.011 g mol^−1= 3.32 mol 6.7 g/1.0794 g mol^−1= 6.65 mol 53.4 g/16.00 g mol^−1=3.34 mol We divide thru by the lowest quotient(3.32)to getC:H:O≡1:2:1. So the empirical formula isCH2O. And the empirical formula is the simplest whole number ratio that defines constituent atoms in a species.

5x5-25) a] The percentage composition of an organic compound found to contain39.9% carbon, 6.7% hydrogen and the rest is oxygen. If the molecular massof the compound is 60gmol"1. Determine the molecular formula of thecompound.4

Answer»

We assume100 gof compound. Therefore the acid contains39.9 g C;6.7 g H and53.4 g O.

Explanation:

We divide the percentage composition by theatomicmass of each constituent element:

39.9 g/12.011 g mol^−1= 3.32 mol

6.7 g/1.0794 g mol^−1= 6.65 mol

53.4 g/16.00 g mol^−1=3.34 mol

We divide thru by the lowest quotient(3.32)to getC:H:O≡1:2:1.

So the empirical formula isCH2O. And the empirical formula is the simplest whole number ratio that defines constituent atoms in a species.